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Make the SPC codec run like it used to on Coldfire before -Os crushed it. Build as a lib using the old -O option. Should not impact ARM targets.

Browse Source 
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@13919 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Michael Sevakis 2007-07-16 21:03:25 +00:00
parent 76fa0f7e30
commit 8552eff9e4
9 changed files with 609 additions and 814 deletions
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15
apps/codecs/Makefile
View File

@ -17,7 +17,7 @@ ifdef APPEXTRA
endif
ifdef SOFTWARECODECS
CODECLIBS = -lmad -la52 -lffmpegFLAC -lTremor -lwavpack -lmusepack -lalac -lfaad -lm4a -lspeex -ldemac -lwma
CODECLIBS = -lspc -lmad -la52 -lffmpegFLAC -lTremor -lwavpack -lmusepack -lalac -lfaad -lm4a -lspeex -ldemac -lwma
endif
# we "borrow" the plugin LDS file
@ -39,7 +39,7 @@ DIRS = .
CODECDEPS = $(LINKCODEC) $(BUILDDIR)/libcodec.a
.PHONY: libmad liba52 libffmpegFLAC libTremor libspeex libwavpack libmusepack libalac libfaad libm4a libdemac libwma
.PHONY: libspc libmad liba52 libffmpegFLAC libTremor libspeex libwavpack libmusepack libalac libfaad libm4a libdemac libwma
OUTPUT = $(SOFTWARECODECS)
@ -52,7 +52,7 @@ $(OBJDIR)/wav.elf : $(OBJDIR)/wav.o $(OBJDIR)/codec_crt0.o
$(OBJDIR)/sid.elf : $(OBJDIR)/sid.o $(OBJDIR)/codec_crt0.o
$(OBJDIR)/adx.elf : $(OBJDIR)/adx.o $(OBJDIR)/codec_crt0.o
$(OBJDIR)/nsf.elf : $(OBJDIR)/nsf.o $(OBJDIR)/codec_crt0.o
$(OBJDIR)/spc.elf : $(OBJDIR)/spc.o $(OBJDIR)/codec_crt0.o
$(OBJDIR)/spc.elf : $(OBJDIR)/spc.o $(BUILDDIR)/libspc.a $(OBJDIR)/codec_crt0.o
$(OBJDIR)/aiff.elf : $(OBJDIR)/aiff.o $(OBJDIR)/codec_crt0.o
$(OBJDIR)/mpa.elf : $(OBJDIR)/mpa.o $(BUILDDIR)/libmad.a $(OBJDIR)/codec_crt0.o
$(OBJDIR)/a52.elf : $(OBJDIR)/a52.o $(BUILDDIR)/liba52.a $(OBJDIR)/codec_crt0.o
@ -140,6 +140,12 @@ $(BUILDDIR)/libcodec.a:
$(LINKCODEC): $(LDS)
$(call PRINTS,build $(@F))cat $< | $(CC) -DMEMORYSIZE=$(MEMORYSIZE) -DCODEC $(INCLUDES) $(TARGET) $(DEFINES) -E -P - >$@
$(BUILDDIR)/libspc.a: libspc
libspc:
$(SILENT)mkdir -p $(OBJDIR)/spc
$(call PRINTS,MAKE in spc)$(MAKE) -C spc OBJDIR=$(OBJDIR)/spc OUTPUT=$(BUILDDIR)/libspc.a
$(BUILDDIR)/libmad.a: libmad
libmad:
@ -213,7 +219,8 @@ libdemac:
$(call PRINTS,MAKE in libdemac)$(MAKE) -C demac/libdemac OBJDIR=$(OBJDIR)/libdemac OUTPUT=$(BUILDDIR)/libdemac.a
clean:
$(call PRINTS,cleaning codecs)rm -fr $(OBJDIR)/libmad $(BUILDDIR)/libmad.a $(OBJDIR)/liba52 $(BUILDDIR)/liba52.a $(OBJDIR)/libffmpegFLAC $(BUILDDIR)/libffmpegFLAC.a $(OBJDIR)/Tremor $(BUILDDIR)/libTremor.a $(OBJDIR)/libspeex $(BUILDDIR)/libSpeex.a $(OBJDIR)/libwavpack $(BUILDDIR)/libwavpack.a $(OBJDIR)/libmusepack $(BUILDDIR)/libmusepack.a $(OBJDIR)/libalac $(BUILDDIR)/libalac.a $(OBJDIR)/libfaad $(BUILDDIR)/libfaad.a $(OBJDIR)/libm4a $(BUILDDIR)/libm4a.a $(OBJDIR)/libdemac $(BUILDDIR)/libdemac.a $(OBJDIR)/libwma $(BUILDDIR)/libwma.a
$(call PRINTS,cleaning codecs)rm -fr $(OBJDIR)/spc $(BUILDDIR)/libspc.a $(OBJDIR)/libmad $(BUILDDIR)/libmad.a $(OBJDIR)/liba52 $(BUILDDIR)/liba52.a $(OBJDIR)/libffmpegFLAC $(BUILDDIR)/libffmpegFLAC.a $(OBJDIR)/Tremor $(BUILDDIR)/libTremor.a $(OBJDIR)/libspeex $(BUILDDIR)/libSpeex.a $(OBJDIR)/libwavpack $(BUILDDIR)/libwavpack.a $(OBJDIR)/libmusepack $(BUILDDIR)/libmusepack.a $(OBJDIR)/libalac $(BUILDDIR)/libalac.a $(OBJDIR)/libfaad $(BUILDDIR)/libfaad.a $(OBJDIR)/libm4a $(BUILDDIR)/libm4a.a $(OBJDIR)/libdemac $(BUILDDIR)/libdemac.a $(OBJDIR)/libwma $(BUILDDIR)/libwma.a
$(SILENT)$(MAKE) -C spc clean OBJDIR=$(OBJDIR)/spc
$(SILENT)$(MAKE) -C libmad clean OBJDIR=$(OBJDIR)/libmad
$(SILENT)$(MAKE) -C liba52 clean OBJDIR=$(OBJDIR)/liba52
$(SILENT)$(MAKE) -C libffmpegFLAC clean OBJDIR=$(OBJDIR)/libffmpegFLAC

567
apps/codecs/spc.c
View File

@ -5,6 +5,7 @@
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id$
*
* Copyright (C) 2006-2007 Adam Gashlin (hcs)
* Copyright (C) 2004-2007 Shay Green (blargg)
@ -21,555 +22,11 @@
/* lovingly ripped off from Game_Music_Emu 0.5.2. http://www.slack.net/~ant/ */
/* DSP Based on Brad Martin's OpenSPC DSP emulator */
/* tag reading from sexyspc by John Brawn (John_Brawn@yahoo.com) and others */
#include "codeclib.h"
#include "inttypes.h"
#include "system.h"
/* rather than comment out asserts, just define NDEBUG */
#define NDEBUG
#include <assert.h>
#undef check
#define check assert
CODEC_HEADER
#ifdef CPU_ARM
#undef ICODE_ATTR
#define ICODE_ATTR
#undef IDATA_ATTR
#define IDATA_ATTR
#endif
/* TGB is the only target fast enough for gaussian and realtime BRR decode */
/* echo is almost fast enough but not quite */
#ifndef TOSHIBA_GIGABEAT_F
/* Cache BRR waves */
#define SPC_BRRCACHE 1
/* Disable gaussian interpolation */
#define SPC_NOINTERP 1
#ifndef CPU_COLDFIRE
/* Disable echo processing */
#define SPC_NOECHO 1
#else
/* Enable echo processing */
#define SPC_NOECHO 0
#endif
#else
/* Don't cache BRR waves */
#define SPC_BRRCACHE 0
/* Allow gaussian interpolation */
#define SPC_NOINTERP 0
/* Allow echo processing */
#define SPC_NOECHO 0
#endif
/* Samples per channel per iteration */
#ifdef CPU_COLDFIRE
#define WAV_CHUNK_SIZE 1024
#else
#define WAV_CHUNK_SIZE 2048
#endif
/* simple profiling with USEC_TIMER */
/*#define SPC_PROFILE*/
#include "spc/spc_codec.h"
#include "spc/spc_profiler.h"
#define THIS struct Spc_Emu* const this
/**************** Little-endian handling ****************/
static inline unsigned get_le16( void const* p )
{
return ((unsigned char const*) p) [1] * 0x100u +
((unsigned char const*) p) [0];
}
static inline int get_le16s( void const* p )
{
return ((signed char const*) p) [1] * 0x100 +
((unsigned char const*) p) [0];
}
static inline void set_le16( void* p, unsigned n )
{
((unsigned char*) p) [1] = (unsigned char) (n >> 8);
((unsigned char*) p) [0] = (unsigned char) n;
}
#define GET_LE16( addr ) get_le16( addr )
#define SET_LE16( addr, data ) set_le16( addr, data )
#define INT16A( addr ) (*(uint16_t*) (addr))
#define INT16SA( addr ) (*(int16_t*) (addr))
#ifdef ROCKBOX_LITTLE_ENDIAN
#define GET_LE16A( addr ) (*(uint16_t*) (addr))
#define GET_LE16SA( addr ) (*( int16_t*) (addr))
#define SET_LE16A( addr, data ) (void) (*(uint16_t*) (addr) = (data))
#else
#define GET_LE16A( addr ) get_le16 ( addr )
#define GET_LE16SA( addr ) get_le16s( addr )
#define SET_LE16A( addr, data ) set_le16 ( addr, data )
#endif
static struct
{
union {
uint8_t padding1 [0x100];
uint16_t align;
} padding1 [1];
uint8_t ram [0x10000];
uint8_t padding2 [0x100];
} ram;
#include "spc/Spc_Dsp.h"
#undef RAM
#define RAM ram.ram
/**************** Timers ****************/
enum { timer_count = 3 };
struct Timer
{
long next_tick;
int period;
int count;
int shift;
int enabled;
int counter;
};
static void Timer_run_( struct Timer* t, long time ) ICODE_ATTR;
static void Timer_run_( struct Timer* t, long time )
{
/* when disabled, next_tick should always be in the future */
assert( t->enabled );
int elapsed = ((time - t->next_tick) >> t->shift) + 1;
t->next_tick += elapsed << t->shift;
elapsed += t->count;
if ( elapsed >= t->period ) /* avoid unnecessary division */
{
int n = elapsed / t->period;
elapsed -= n * t->period;
t->counter = (t->counter + n) & 15;
}
t->count = elapsed;
}
static inline void Timer_run( struct Timer* t, long time )
{
if ( time >= t->next_tick )
Timer_run_( t, time );
}
/**************** SPC emulator ****************/
/* 1.024 MHz clock / 32000 samples per second */
enum { clocks_per_sample = 32 };
enum { extra_clocks = clocks_per_sample / 2 };
/* using this disables timer (since this will always be in the future) */
enum { timer_disabled_time = 127 };
enum { rom_size = 64 };
enum { rom_addr = 0xFFC0 };
struct cpu_regs_t
{
long pc; /* more than 16 bits to allow overflow detection */
uint8_t a;
uint8_t x;
uint8_t y;
uint8_t status;
uint8_t sp;
};
struct Spc_Emu
{
uint8_t cycle_table [0x100];
struct cpu_regs_t r;
int32_t* sample_buf;
long next_dsp;
int rom_enabled;
int extra_cycles;
struct Timer timer [timer_count];
/* large objects at end */
struct Spc_Dsp dsp;
uint8_t extra_ram [rom_size];
uint8_t boot_rom [rom_size];
};
static void SPC_enable_rom( THIS, int enable )
{
if ( this->rom_enabled != enable )
{
this->rom_enabled = enable;
memcpy( RAM + rom_addr, (enable ? this->boot_rom : this->extra_ram), rom_size );
/* TODO: ROM can still get overwritten when DSP writes to echo buffer */
}
}
static void SPC_Init( THIS )
{
this->timer [0].shift = 4 + 3; /* 8 kHz */
this->timer [1].shift = 4 + 3; /* 8 kHz */
this->timer [2].shift = 4; /* 8 kHz */
/* Put STOP instruction around memory to catch PC underflow/overflow. */
memset( ram.padding1, 0xFF, sizeof ram.padding1 );
memset( ram.padding2, 0xFF, sizeof ram.padding2 );
/* A few tracks read from the last four bytes of IPL ROM */
this->boot_rom [sizeof this->boot_rom - 2] = 0xC0;
this->boot_rom [sizeof this->boot_rom - 1] = 0xFF;
memset( this->boot_rom, 0, sizeof this->boot_rom - 2 );
}
static void SPC_load_state( THIS, struct cpu_regs_t const* cpu_state,
const void* new_ram, const void* dsp_state )
{
memcpy(&(this->r),cpu_state,sizeof this->r);
/* ram */
memcpy( RAM, new_ram, sizeof RAM );
memcpy( this->extra_ram, RAM + rom_addr, sizeof this->extra_ram );
/* boot rom (have to force enable_rom() to update it) */
this->rom_enabled = !(RAM [0xF1] & 0x80);
SPC_enable_rom( this, !this->rom_enabled );
/* dsp */
/* some SPCs rely on DSP immediately generating one sample */
this->extra_cycles = 32;
DSP_reset( &this->dsp );
int i;
for ( i = 0; i < register_count; i++ )
DSP_write( &this->dsp, i, ((uint8_t const*) dsp_state) [i] );
/* timers */
for ( i = 0; i < timer_count; i++ )
{
struct Timer* t = &this->timer [i];
t->next_tick = -extra_clocks;
t->enabled = (RAM [0xF1] >> i) & 1;
if ( !t->enabled )
t->next_tick = timer_disabled_time;
t->count = 0;
t->counter = RAM [0xFD + i] & 15;
int p = RAM [0xFA + i];
if ( !p )
p = 0x100;
t->period = p;
}
/* Handle registers which already give 0 when read by
setting RAM and not changing it.
Put STOP instruction in registers which can be read,
to catch attempted execution. */
RAM [0xF0] = 0;
RAM [0xF1] = 0;
RAM [0xF3] = 0xFF;
RAM [0xFA] = 0;
RAM [0xFB] = 0;
RAM [0xFC] = 0;
RAM [0xFD] = 0xFF;
RAM [0xFE] = 0xFF;
RAM [0xFF] = 0xFF;
}
static void clear_echo( THIS )
{
if ( !(DSP_read( &this->dsp, 0x6C ) & 0x20) )
{
unsigned addr = 0x100 * DSP_read( &this->dsp, 0x6D );
size_t size = 0x800 * DSP_read( &this->dsp, 0x7D );
size_t max_size = sizeof RAM - addr;
if ( size > max_size )
size = sizeof RAM - addr;
memset( RAM + addr, 0xFF, size );
}
}
enum { spc_file_size = 0x10180 };
struct spc_file_t
{
char signature [27];
char unused [10];
uint8_t pc [2];
uint8_t a;
uint8_t x;
uint8_t y;
uint8_t status;
uint8_t sp;
char unused2 [212];
uint8_t ram [0x10000];
uint8_t dsp [128];
uint8_t ipl_rom [128];
};
static int SPC_load_spc( THIS, const void* data, long size )
{
struct spc_file_t const* spc = (struct spc_file_t const*) data;
struct cpu_regs_t regs;
if ( size < spc_file_size )
return -1;
if ( memcmp( spc->signature, "SNES-SPC700 Sound File Data", 27 ) != 0 )
return -1;
regs.pc = spc->pc [1] * 0x100 + spc->pc [0];
regs.a = spc->a;
regs.x = spc->x;
regs.y = spc->y;
regs.status = spc->status;
regs.sp = spc->sp;
if ( (unsigned long) size >= sizeof *spc )
memcpy( this->boot_rom, spc->ipl_rom, sizeof this->boot_rom );
SPC_load_state( this, &regs, spc->ram, spc->dsp );
clear_echo(this);
return 0;
}
/**************** DSP interaction ****************/
static void SPC_run_dsp_( THIS, long time ) ICODE_ATTR;
static void SPC_run_dsp_( THIS, long time )
{
/* divide by clocks_per_sample */
int count = ((time - this->next_dsp) >> 5) + 1;
int32_t* buf = this->sample_buf;
this->sample_buf = buf + count;
this->next_dsp += count * clocks_per_sample;
DSP_run( &this->dsp, count, buf );
}
static inline void SPC_run_dsp( THIS, long time )
{
if ( time >= this->next_dsp )
SPC_run_dsp_( this, time );
}
static int SPC_read( THIS, unsigned addr, long const time ) ICODE_ATTR;
static int SPC_read( THIS, unsigned addr, long const time )
{
int result = RAM [addr];
if ( ((unsigned) (addr - 0xF0)) < 0x10 )
{
assert( 0xF0 <= addr && addr <= 0xFF );
/* counters */
int i = addr - 0xFD;
if ( i >= 0 )
{
struct Timer* t = &this->timer [i];
Timer_run( t, time );
result = t->counter;
t->counter = 0;
}
/* dsp */
else if ( addr == 0xF3 )
{
SPC_run_dsp( this, time );
result = DSP_read( &this->dsp, RAM [0xF2] & 0x7F );
}
}
return result;
}
static void SPC_write( THIS, unsigned addr, int data, long const time )
ICODE_ATTR;
static void SPC_write( THIS, unsigned addr, int data, long const time )
{
/* first page is very common */
if ( addr < 0xF0 )
{
RAM [addr] = (uint8_t) data;
}
else switch ( addr )
{
/* RAM */
default:
if ( addr < rom_addr )
{
RAM [addr] = (uint8_t) data;
}
else
{
this->extra_ram [addr - rom_addr] = (uint8_t) data;
if ( !this->rom_enabled )
RAM [addr] = (uint8_t) data;
}
break;
/* DSP */
/*case 0xF2:*/ /* mapped to RAM */
case 0xF3: {
SPC_run_dsp( this, time );
int reg = RAM [0xF2];
if ( reg < register_count ) {
DSP_write( &this->dsp, reg, data );
}
else {
/*dprintf( "DSP write to $%02X\n", (int) reg ); */
}
break;
}
case 0xF0: /* Test register */
/*dprintf( "Wrote $%02X to $F0\n", (int) data ); */
break;
/* Config */
case 0xF1:
{
int i;
/* timers */
for ( i = 0; i < timer_count; i++ )
{
struct Timer * t = this->timer+i;
if ( !(data & (1 << i)) )
{
t->enabled = 0;
t->next_tick = timer_disabled_time;
}
else if ( !t->enabled )
{
/* just enabled */
t->enabled = 1;
t->counter = 0;
t->count = 0;
t->next_tick = time;
}
}
/* port clears */
if ( data & 0x10 )
{
RAM [0xF4] = 0;
RAM [0xF5] = 0;
}
if ( data & 0x20 )
{
RAM [0xF6] = 0;
RAM [0xF7] = 0;
}
SPC_enable_rom( this, (data & 0x80) != 0 );
break;
}
/* Ports */
case 0xF4:
case 0xF5:
case 0xF6:
case 0xF7:
/* to do: handle output ports */
break;
/* verified on SNES that these are read/write (RAM) */
/*case 0xF8: */
/*case 0xF9: */
/* Timers */
case 0xFA:
case 0xFB:
case 0xFC: {
int i = addr - 0xFA;
struct Timer* t = &this->timer [i];
if ( (t->period & 0xFF) != data )
{
Timer_run( t, time );
this->timer[i].period = data ? data : 0x100;
}
break;
}
/* Counters (cleared on write) */
case 0xFD:
case 0xFE:
case 0xFF:
/*dprintf( "Wrote to counter $%02X\n", (int) addr ); */
this->timer [addr - 0xFD].counter = 0;
break;
}
}
#include "spc/Spc_Cpu.h"
/**************** Sample generation ****************/
static int SPC_play( THIS, long count, int32_t* out ) ICODE_ATTR;
static int SPC_play( THIS, long count, int32_t* out )
{
int i;
assert( count % 2 == 0 ); /* output is always in pairs of samples */
long start_time = -(count >> 1) * clocks_per_sample - extra_clocks;
/* DSP output is made on-the-fly when DSP registers are read or written */
this->sample_buf = out;
this->next_dsp = start_time + clocks_per_sample;
/* Localize timer next_tick times and run them to the present to prevent
a running but ignored timer's next_tick from getting too far behind
and overflowing. */
for ( i = 0; i < timer_count; i++ )
{
struct Timer* t = &this->timer [i];
if ( t->enabled )
{
t->next_tick += start_time + extra_clocks;
Timer_run( t, start_time );
}
}
/* Run from start_time to 0, pre-advancing by extra cycles from last run */
this->extra_cycles = CPU_run( this, start_time + this->extra_cycles ) +
extra_clocks;
if ( this->extra_cycles < 0 )
{
/*dprintf( "Unhandled instruction $%02X, pc = $%04X\n",
(int) CPU_read( r.pc ), (unsigned) r.pc ); */
return -1;
}
/* Catch DSP up to present */
#if 0
ENTER_TIMER(cpu);
#endif
SPC_run_dsp( this, -extra_clocks );
#if 0
EXIT_TIMER(cpu);
#endif
assert( this->next_dsp == clocks_per_sample - extra_clocks );
assert( this->sample_buf - out == count );
return 0;
}
CODEC_HEADER
/**************** ID666 parsing ****************/
@ -733,15 +190,15 @@ static int32_t samples[WAV_CHUNK_SIZE*2] IBSS_ATTR;
static struct Spc_Emu spc_emu IDATA_ATTR;
enum {sample_rate = 32000};
enum {SAMPLE_RATE = 32000};
/* The main decoder loop */
static int play_track( void )
{
int sampleswritten=0;
unsigned long fadestartsample = ID666.length*(long long) sample_rate/1000;
unsigned long fadeendsample = (ID666.length+ID666.fade)*(long long) sample_rate/1000;
unsigned long fadestartsample = ID666.length*(long long) SAMPLE_RATE/1000;
unsigned long fadeendsample = (ID666.length+ID666.fade)*(long long) SAMPLE_RATE/1000;
int fadedec = 0;
int fadevol = 0x7fffffffl;
@ -758,7 +215,7 @@ static int play_track( void )
}
if (ci->seek_time) {
int curtime = sampleswritten*1000LL/sample_rate;
int curtime = sampleswritten*1000LL/SAMPLE_RATE;
DEBUGF("seek to %ld\ncurrently at %d\n",ci->seek_time,curtime);
if (ci->seek_time < curtime) {
DEBUGF("seek backwards = reset\n");
@ -778,7 +235,7 @@ static int play_track( void )
/* is track timed? */
if (ci->global_settings->repeat_mode!=REPEAT_ONE && ci->id3->length) {
unsigned long curtime = sampleswritten*1000LL/sample_rate;
unsigned long curtime = sampleswritten*1000LL/SAMPLE_RATE;
unsigned long lasttimesample = (sampleswritten-WAV_CHUNK_SIZE);
/* fade? */
@ -811,7 +268,7 @@ static int play_track( void )
ci->pcmbuf_insert(samples, samples+WAV_CHUNK_SIZE, WAV_CHUNK_SIZE);
if (ci->global_settings->repeat_mode!=REPEAT_ONE)
ci->set_elapsed(sampleswritten*1000LL/sample_rate);
ci->set_elapsed(sampleswritten*1000LL/SAMPLE_RATE);
else
ci->set_elapsed(0);
}
@ -824,11 +281,11 @@ static int play_track( void )
/* this is the codec entry point */
enum codec_status codec_main(void)
{
memcpy( spc_emu.cycle_table, cycle_table, sizeof cycle_table );
#ifdef CPU_COLDFIRE
/* signed integer mode with saturation */
coldfire_set_macsr(EMAC_SATURATE);
#endif
CPU_Init(&spc_emu);
do
{
@ -839,7 +296,7 @@ enum codec_status codec_main(void)
DEBUGF("SPC: after init\n");
ci->configure(DSP_SET_SAMPLE_DEPTH, 24);
ci->configure(DSP_SET_FREQUENCY, sample_rate);
ci->configure(DSP_SET_FREQUENCY, SAMPLE_RATE);
ci->configure(DSP_SET_STEREO_MODE, STEREO_NONINTERLEAVED);
/* wait for track info to load */

44
apps/codecs/spc/Makefile Normal file
View File

@ -0,0 +1,44 @@
# __________ __ ___.
# Open \______ \ ____ ____ | | _\_ |__ _______ ___
# Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
# Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
# Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
# \/ \/ \/ \/ \/
# $Id$
#
INCLUDES=-I$(APPSDIR) -I.. -I. -I$(FIRMDIR)/include -I$(FIRMDIR)/export \
-I$(FIRMDIR)/common -I$(FIRMDIR)/drivers -I$(BUILDDIR)
ifdef APPEXTRA
INCLUDES += $(patsubst %,-I$(APPSDIR)/%,$(subst :, ,$(APPEXTRA)))
endif
SPCOPTS = -O -DROCKBOX
CFLAGS = $(INCLUDES) $(GCCOPTS) $(TARGET_INC) $(SPCOPTS) $(TARGET) \
$(EXTRA_DEFINES) -DMEM=${MEMORYSIZE} $(PROFILE_OPTS) -DCODEC=1
# This sets up 'SRC' based on the files mentioned in SOURCES
include $(TOOLSDIR)/makesrc.inc
SOURCES = $(SRC)
OBJS2 := $(SRC:%.c=$(OBJDIR)/%.o)
OBJS = $(patsubst %.S, $(OBJDIR)/%.o, $(OBJS2))
DEPFILE = $(OBJDIR)/dep-spc
DIRS =
all: $(OUTPUT)
$(OUTPUT): $(OBJS)
$(call PRINTS,AR+RANLIB $(@F))$(AR) ruv $@ $+ >/dev/null 2>&1
$(SILENT)$(RANLIB) $@
include $(TOOLSDIR)/make.inc
clean:
$(call PRINTS,cleaning spc)rm -f $(OBJS) $(OUTPUT) $(DEPFILE)
ifneq ($(MAKECMDGOALS),clean)
-include $(DEPFILE)
endif

4
apps/codecs/spc/SOURCES Normal file
View File

@ -0,0 +1,4 @@
spc_cpu.c
spc_dsp.c
spc_emu.c
spc_profiler.c

21
apps/codecs/spc/Spc_Cpu.h → apps/codecs/spc/spc_cpu.c
View File

@ -5,6 +5,7 @@
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id$
*
* Copyright (C) 2006-2007 Adam Gashlin (hcs)
* Copyright (C) 2004-2007 Shay Green (blargg)
@ -17,9 +18,15 @@
* KIND, either express or implied.
*
****************************************************************************/
/* The CPU portion (shock!) */
#include "codec.h"
#include "codecs.h"
#include "spc_codec.h"
#include "spc_profiler.h"
#undef check
#define check assert
#define READ( addr ) (SPC_read( this, addr, spc_time_ ))
#define WRITE( addr, value ) (SPC_write( this, addr, value, spc_time_ ))
@ -103,9 +110,7 @@ enum { st_c = 0x01 };
#define SET_SP( v ) (sp = RAM + 0x101 + (v))
#define GET_SP() (sp - 0x101 - RAM)
static long CPU_run( THIS, long start_time ) ICODE_ATTR;
static long CPU_run( THIS, long start_time )
long CPU_run( THIS, long start_time )
{
#if 0
ENTER_TIMER(cpu);
@ -1035,3 +1040,9 @@ out_of_time:
#endif
return spc_time_;
}
void CPU_Init( THIS )
{
ci->memcpy( this->cycle_table, cycle_table, sizeof cycle_table );
}

283
apps/codecs/spc/Spc_Dsp.h → apps/codecs/spc/spc_dsp.c
View File

@ -20,196 +20,24 @@
****************************************************************************/
/* The DSP portion (awe!) */
#include "codec.h"
#include "codecs.h"
#include "spc_codec.h"
#include "spc_profiler.h"
enum { voice_count = 8 };
enum { register_count = 128 };
struct raw_voice_t
{
int8_t volume [2];
uint8_t rate [2];
uint8_t waveform;
uint8_t adsr [2]; /* envelope rates for attack, decay, and sustain */
uint8_t gain; /* envelope gain (if not using ADSR) */
int8_t envx; /* current envelope level */
int8_t outx; /* current sample */
int8_t unused [6];
};
struct globals_t
{
int8_t unused1 [12];
int8_t volume_0; /* 0C Main Volume Left (-.7) */
int8_t echo_feedback; /* 0D Echo Feedback (-.7) */
int8_t unused2 [14];
int8_t volume_1; /* 1C Main Volume Right (-.7) */
int8_t unused3 [15];
int8_t echo_volume_0; /* 2C Echo Volume Left (-.7) */
uint8_t pitch_mods; /* 2D Pitch Modulation on/off for each voice */
int8_t unused4 [14];
int8_t echo_volume_1; /* 3C Echo Volume Right (-.7) */
uint8_t noise_enables; /* 3D Noise output on/off for each voice */
int8_t unused5 [14];
uint8_t key_ons; /* 4C Key On for each voice */
uint8_t echo_ons; /* 4D Echo on/off for each voice */
int8_t unused6 [14];
uint8_t key_offs; /* 5C key off for each voice
(instantiates release mode) */
uint8_t wave_page; /* 5D source directory (wave table offsets) */
int8_t unused7 [14];
uint8_t flags; /* 6C flags and noise freq */
uint8_t echo_page; /* 6D */
int8_t unused8 [14];
uint8_t wave_ended; /* 7C */
uint8_t echo_delay; /* 7D ms >> 4 */
char unused9 [2];
};
enum state_t { /* -1, 0, +1 allows more efficient if statements */
state_decay = -1,
state_sustain = 0,
state_attack = +1,
state_release = 2
};
struct cache_entry_t
{
int16_t const* samples;
unsigned end; /* past-the-end position */
unsigned loop; /* number of samples in loop */
unsigned start_addr;
};
enum { brr_block_size = 16 };
struct voice_t
{
#if SPC_BRRCACHE
int16_t const* samples;
long wave_end;
int wave_loop;
#else
int16_t samples [3 + brr_block_size + 1];
int block_header; /* header byte from current block */
#ifdef CPU_COLDFIRE
static int32_t fir_buf[FIR_BUF_HALF]
__attribute__ ((aligned (FIR_BUF_SIZE*2))) IBSS_ATTR;
#endif
uint8_t const* addr;
short volume [2];
long position;/* position in samples buffer, with 12-bit fraction */
short envx;
short env_mode;
short env_timer;
short key_on_delay;
};
#if SPC_BRRCACHE
/* a little extra for samples that go past end */
static int16_t BRRcache [0x20000 + 32];
int16_t BRRcache [0x20000 + 32];
#endif
enum { fir_buf_half = 8 };
#ifdef CPU_COLDFIRE
/* global because of the large aligment requirement for hardware masking -
* L-R interleaved 16-bit samples for easy loading and mac.w use.
*/
enum
void DSP_write( struct Spc_Dsp* this, int i, int data )
{
fir_buf_size = fir_buf_half * sizeof ( int32_t ),
fir_buf_mask = ~fir_buf_size
};
int32_t fir_buf[fir_buf_half]
__attribute__ ((aligned (fir_buf_size*2))) IBSS_ATTR;
#endif /* CPU_COLDFIRE */
struct Spc_Dsp
{
union
{
struct raw_voice_t voice [voice_count];
uint8_t reg [register_count];
struct globals_t g;
int16_t align;
} r;
unsigned echo_pos;
int keys_down;
int noise_count;
uint16_t noise; /* also read as int16_t */
#ifdef CPU_COLDFIRE
/* circularly hardware masked address */
int32_t *fir_ptr;
/* wrapped address just behind current position -
allows mac.w to increment and mask fir_ptr */
int32_t *last_fir_ptr;
/* copy of echo FIR constants as int16_t for use with mac.w */
int16_t fir_coeff[voice_count];
#else
/* fir_buf [i + 8] == fir_buf [i], to avoid wrap checking in FIR code */
int fir_pos; /* (0 to 7) */
int fir_buf [fir_buf_half * 2] [2];
/* copy of echo FIR constants as int, for faster access */
int fir_coeff [voice_count];
#endif
struct voice_t voice_state [voice_count];
#if SPC_BRRCACHE
uint8_t oldsize;
struct cache_entry_t wave_entry [256];
struct cache_entry_t wave_entry_old [256];
#endif
};
struct src_dir
{
char start [2];
char loop [2];
};
static void DSP_reset( struct Spc_Dsp* this )
{
this->keys_down = 0;
this->echo_pos = 0;
this->noise_count = 0;
this->noise = 2;
this->r.g.flags = 0xE0; /* reset, mute, echo off */
this->r.g.key_ons = 0;
memset( this->voice_state, 0, sizeof this->voice_state );
int i;
for ( i = voice_count; --i >= 0; )
{
struct voice_t* v = this->voice_state + i;
v->env_mode = state_release;
v->addr = ram.ram;
}
#if SPC_BRRCACHE
this->oldsize = 0;
for ( i = 0; i < 256; i++ )
this->wave_entry [i].start_addr = -1;
#endif
#ifdef CPU_COLDFIRE
this->fir_ptr = fir_buf;
this->last_fir_ptr = &fir_buf [7];
memset( fir_buf, 0, sizeof fir_buf );
#else
this->fir_pos = 0;
memset( this->fir_buf, 0, sizeof this->fir_buf );
#endif
assert( offsetof (struct globals_t,unused9 [2]) == register_count );
assert( sizeof (this->r.voice) == register_count );
}
static void DSP_write( struct Spc_Dsp* this, int i, int data ) ICODE_ATTR;
static void DSP_write( struct Spc_Dsp* this, int i, int data )
{
assert( (unsigned) i < register_count );
assert( (unsigned) i < REGISTER_COUNT );
this->r.reg [i] = data;
int high = i >> 4;
@ -228,12 +56,6 @@ static void DSP_write( struct Spc_Dsp* this, int i, int data )
}
}
static inline int DSP_read( struct Spc_Dsp* this, int i )
{
assert( (unsigned) i < register_count );
return this->r.reg [i];
}
/* if ( n < -32768 ) out = -32768; */
/* if ( n > 32767 ) out = 32767; */
#define CLAMP16( n, out )\
@ -321,8 +143,8 @@ static void decode_brr( struct Spc_Dsp* this, unsigned start_addr,
int const left_shift = left_shifts [scale];
/* output position */
out += brr_block_size;
int offset = -brr_block_size << 2;
out += BRR_BLOCK_SIZE;
int offset = -BRR_BLOCK_SIZE << 2;
do /* decode and filter 16 samples */
{
@ -432,10 +254,10 @@ static void key_on(struct Spc_Dsp* const this, struct voice_t* const voice,
{
voice->addr = RAM + start_addr;
/* BRR filter uses previous samples */
voice->samples [brr_block_size + 1] = 0;
voice->samples [brr_block_size + 2] = 0;
voice->samples [BRR_BLOCK_SIZE + 1] = 0;
voice->samples [BRR_BLOCK_SIZE + 2] = 0;
/* decode three samples immediately */
voice->position = (brr_block_size + 3) * 0x1000 - 1;
voice->position = (BRR_BLOCK_SIZE + 3) * 0x1000 - 1;
voice->block_header = 0; /* "previous" BRR header */
}
#else
@ -460,9 +282,7 @@ static void key_on(struct Spc_Dsp* const this, struct voice_t* const voice,
}
}
static void DSP_run_( struct Spc_Dsp* this, long count, int32_t* out_buf )
ICODE_ATTR;
static void DSP_run_( struct Spc_Dsp* this, long count, int32_t* out_buf )
void DSP_run_( struct Spc_Dsp* this, long count, int32_t* out_buf )
{
#undef RAM
#ifdef CPU_ARM
@ -516,7 +336,7 @@ static void DSP_run_( struct Spc_Dsp* this, long count, int32_t* out_buf )
#ifdef ROCKBOX_BIG_ENDIAN
/* Convert endiannesses before entering loops - these
get used alot */
const uint32_t rates[voice_count] =
const uint32_t rates[VOICE_COUNT] =
{
GET_LE16A( this->r.voice[0].rate ) & 0x3FFF,
GET_LE16A( this->r.voice[1].rate ) & 0x3FFF,
@ -531,7 +351,7 @@ static void DSP_run_( struct Spc_Dsp* this, long count, int32_t* out_buf )
#define IF_RBE(...) __VA_ARGS__
#ifdef CPU_COLDFIRE
/* Initialize mask register with the buffer address mask */
asm volatile ("move.l %[m], %%mask" : : [m]"i"(fir_buf_mask));
asm volatile ("move.l %[m], %%mask" : : [m]"i"(FIR_BUF_MASK));
const int echo_wrap = (this->r.g.echo_delay & 15) * 0x800;
const int echo_start = this->r.g.echo_page * 0x100;
#endif /* CPU_COLDFIRE */
@ -757,9 +577,9 @@ static void DSP_run_( struct Spc_Dsp* this, long count, int32_t* out_buf )
#endif
#if !SPC_BRRCACHE
/* Decode BRR block */
if ( voice->position >= brr_block_size * 0x1000 )
if ( voice->position >= BRR_BLOCK_SIZE * 0x1000 )
{
voice->position -= brr_block_size * 0x1000;
voice->position -= BRR_BLOCK_SIZE * 0x1000;
uint8_t const* addr = voice->addr;
if ( addr >= RAM + 0x10000 )
@ -805,13 +625,13 @@ static void DSP_run_( struct Spc_Dsp* this, long count, int32_t* out_buf )
int const left_shift = left_shifts [scale];
/* previous samples */
int smp2 = voice->samples [brr_block_size + 1];
int smp1 = voice->samples [brr_block_size + 2];
voice->samples [0] = voice->samples [brr_block_size];
int smp2 = voice->samples [BRR_BLOCK_SIZE + 1];
int smp1 = voice->samples [BRR_BLOCK_SIZE + 2];
voice->samples [0] = voice->samples [BRR_BLOCK_SIZE];
/* output position */
short* out = voice->samples + (1 + brr_block_size);
int offset = -brr_block_size << 2;
short* out = voice->samples + (1 + BRR_BLOCK_SIZE);
int offset = -BRR_BLOCK_SIZE << 2;
/* if next block has end flag set,
this block ends early (verified) */
@ -820,9 +640,9 @@ static void DSP_run_( struct Spc_Dsp* this, long count, int32_t* out_buf )
/* arrange for last 9 samples to be skipped */
int const skip = 9;
out += (skip & 1);
voice->samples [skip] = voice->samples [brr_block_size];
voice->samples [skip] = voice->samples [BRR_BLOCK_SIZE];
voice->position += skip * 0x1000;
offset = (-brr_block_size + (skip & ~1)) << 2;
offset = (-BRR_BLOCK_SIZE + (skip & ~1)) << 2;
addr -= skip / 2;
/* force sample to end on next decode */
voice->block_header = 1;
@ -1026,7 +846,7 @@ static void DSP_run_( struct Spc_Dsp* this, long count, int32_t* out_buf )
"asr.l %[sh], %[output] \r\n"
"mac.l %[vvol_0], %[output], %%acc0 \r\n"
"mac.l %[vvol_1], %[output], %%acc1 \r\n"
: [output]"=&r"(amp_0)
: [output]"=&d"(amp_0)
: [vvol_0]"r"((int)voice->volume[0]),
[vvol_1]"r"((int)voice->volume[1]),
[sh]"d"(11)
@ -1252,12 +1072,12 @@ static void DSP_run_( struct Spc_Dsp* this, long count, int32_t* out_buf )
/* Keep last 8 samples */
int (* const fir_ptr) [2] = this->fir_buf + this->fir_pos;
this->fir_pos = (this->fir_pos + 1) & (fir_buf_half - 1);
this->fir_pos = (this->fir_pos + 1) & (FIR_BUF_HALF - 1);
fir_ptr [ 0] [0] = fb_0;
fir_ptr [ 0] [1] = fb_1;
/* duplicate at +8 eliminates wrap checking below */
fir_ptr [fir_buf_half] [0] = fb_0;
fir_ptr [fir_buf_half] [1] = fb_1;
fir_ptr [FIR_BUF_HALF] [0] = fb_0;
fir_ptr [FIR_BUF_HALF] [1] = fb_1;
/* Apply FIR */
fb_0 *= this->fir_coeff [0];
@ -1311,12 +1131,41 @@ static void DSP_run_( struct Spc_Dsp* this, long count, int32_t* out_buf )
#endif
}
static inline void DSP_run( struct Spc_Dsp* this, long count, int32_t* out )
void DSP_reset( struct Spc_Dsp* this )
{
/* Should we just fill the buffer with silence? Flags won't be cleared */
/* during this run so it seems it should keep resetting every sample. */
if ( this->r.g.flags & 0x80 )
DSP_reset( this );
this->keys_down = 0;
this->echo_pos = 0;
this->noise_count = 0;
this->noise = 2;
DSP_run_( this, count, out );
this->r.g.flags = 0xE0; /* reset, mute, echo off */
this->r.g.key_ons = 0;
ci->memset( this->voice_state, 0, sizeof this->voice_state );
int i;
for ( i = VOICE_COUNT; --i >= 0; )
{
struct voice_t* v = this->voice_state + i;
v->env_mode = state_release;
v->addr = ram.ram;
}
#if SPC_BRRCACHE
this->oldsize = 0;
for ( i = 0; i < 256; i++ )
this->wave_entry [i].start_addr = -1;
#endif
#ifdef CPU_COLDFIRE
this->fir_ptr = fir_buf;
this->last_fir_ptr = &fir_buf [7];
ci->memset( fir_buf, 0, sizeof fir_buf );
#else
this->fir_pos = 0;
ci->memset( this->fir_buf, 0, sizeof this->fir_buf );
#endif
assert( offsetof (struct globals_t,unused9 [2]) == REGISTER_COUNT );
assert( sizeof (this->r.voice) == REGISTER_COUNT );
}

378
apps/codecs/spc/spc_emu.c Normal file
View File

@ -0,0 +1,378 @@
/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id$
*
* Copyright (C) 2006-2007 Adam Gashlin (hcs)
* Copyright (C) 2004-2007 Shay Green (blargg)
* Copyright (C) 2002 Brad Martin
*
* All files in this archive are subject to the GNU General Public License.
* See the file COPYING in the source tree root for full license agreement.
*
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
* KIND, either express or implied.
*
****************************************************************************/
#include "codec.h"
#include "codecs.h"
#include "spc_codec.h"
#include "spc_profiler.h"
/* lovingly ripped off from Game_Music_Emu 0.5.2. http://www.slack.net/~ant/ */
/* DSP Based on Brad Martin's OpenSPC DSP emulator */
/* tag reading from sexyspc by John Brawn (John_Brawn@yahoo.com) and others */
struct cpu_ram_t ram;
/**************** Timers ****************/
void Timer_run_( struct Timer* t, long time )
{
/* when disabled, next_tick should always be in the future */
assert( t->enabled );
int elapsed = ((time - t->next_tick) >> t->shift) + 1;
t->next_tick += elapsed << t->shift;
elapsed += t->count;
if ( elapsed >= t->period ) /* avoid unnecessary division */
{
int n = elapsed / t->period;
elapsed -= n * t->period;
t->counter = (t->counter + n) & 15;
}
t->count = elapsed;
}
/**************** SPC emulator ****************/
/* 1.024 MHz clock / 32000 samples per second */
static void SPC_enable_rom( THIS, int enable )
{
if ( this->rom_enabled != enable )
{
this->rom_enabled = enable;
ci->memcpy( RAM + ROM_ADDR, (enable ? this->boot_rom : this->extra_ram), ROM_SIZE );
/* TODO: ROM can still get overwritten when DSP writes to echo buffer */
}
}
void SPC_Init( THIS )
{
this->timer [0].shift = 4 + 3; /* 8 kHz */
this->timer [1].shift = 4 + 3; /* 8 kHz */
this->timer [2].shift = 4; /* 8 kHz */
/* Put STOP instruction around memory to catch PC underflow/overflow. */
ci->memset( ram.padding1, 0xFF, sizeof ram.padding1 );
ci->memset( ram.padding2, 0xFF, sizeof ram.padding2 );
/* A few tracks read from the last four bytes of IPL ROM */
this->boot_rom [sizeof this->boot_rom - 2] = 0xC0;
this->boot_rom [sizeof this->boot_rom - 1] = 0xFF;
ci->memset( this->boot_rom, 0, sizeof this->boot_rom - 2 );
}
static void SPC_load_state( THIS, struct cpu_regs_t const* cpu_state,
const void* new_ram, const void* dsp_state )
{
ci->memcpy(&(this->r),cpu_state,sizeof this->r);
/* ram */
ci->memcpy( RAM, new_ram, sizeof RAM );
ci->memcpy( this->extra_ram, RAM + ROM_ADDR, sizeof this->extra_ram );
/* boot rom (have to force enable_rom() to update it) */
this->rom_enabled = !(RAM [0xF1] & 0x80);
SPC_enable_rom( this, !this->rom_enabled );
/* dsp */
/* some SPCs rely on DSP immediately generating one sample */
this->extra_cycles = 32;
DSP_reset( &this->dsp );
int i;
for ( i = 0; i < REGISTER_COUNT; i++ )
DSP_write( &this->dsp, i, ((uint8_t const*) dsp_state) [i] );
/* timers */
for ( i = 0; i < TIMER_COUNT; i++ )
{
struct Timer* t = &this->timer [i];
t->next_tick = -EXTRA_CLOCKS;
t->enabled = (RAM [0xF1] >> i) & 1;
if ( !t->enabled )
t->next_tick = TIMER_DISABLED_TIME;
t->count = 0;
t->counter = RAM [0xFD + i] & 15;
int p = RAM [0xFA + i];
if ( !p )
p = 0x100;
t->period = p;
}
/* Handle registers which already give 0 when read by
setting RAM and not changing it.
Put STOP instruction in registers which can be read,
to catch attempted execution. */
RAM [0xF0] = 0;
RAM [0xF1] = 0;
RAM [0xF3] = 0xFF;
RAM [0xFA] = 0;
RAM [0xFB] = 0;
RAM [0xFC] = 0;
RAM [0xFD] = 0xFF;
RAM [0xFE] = 0xFF;
RAM [0xFF] = 0xFF;
}
static void clear_echo( THIS )
{
if ( !(DSP_read( &this->dsp, 0x6C ) & 0x20) )
{
unsigned addr = 0x100 * DSP_read( &this->dsp, 0x6D );
size_t size = 0x800 * DSP_read( &this->dsp, 0x7D );
size_t max_size = sizeof RAM - addr;
if ( size > max_size )
size = sizeof RAM - addr;
ci->memset( RAM + addr, 0xFF, size );
}
}
int SPC_load_spc( THIS, const void* data, long size )
{
struct spc_file_t const* spc = (struct spc_file_t const*) data;
struct cpu_regs_t regs;
if ( size < SPC_FILE_SIZE )
return -1;
if ( ci->memcmp( spc->signature, "SNES-SPC700 Sound File Data", 27 ) != 0 )
return -1;
regs.pc = spc->pc [1] * 0x100 + spc->pc [0];
regs.a = spc->a;
regs.x = spc->x;
regs.y = spc->y;
regs.status = spc->status;
regs.sp = spc->sp;
if ( (unsigned long) size >= sizeof *spc )
ci->memcpy( this->boot_rom, spc->ipl_rom, sizeof this->boot_rom );
SPC_load_state( this, &regs, spc->ram, spc->dsp );
clear_echo(this);
return 0;
}
/**************** DSP interaction ****************/
void SPC_run_dsp_( THIS, long time )
{
/* divide by CLOCKS_PER_SAMPLE */
int count = ((time - this->next_dsp) >> 5) + 1;
int32_t* buf = this->sample_buf;
this->sample_buf = buf + count;
this->next_dsp += count * CLOCKS_PER_SAMPLE;
DSP_run( &this->dsp, count, buf );
}
int SPC_read( THIS, unsigned addr, long const time )
{
int result = RAM [addr];
if ( ((unsigned) (addr - 0xF0)) < 0x10 )
{
assert( 0xF0 <= addr && addr <= 0xFF );
/* counters */
int i = addr - 0xFD;
if ( i >= 0 )
{
struct Timer* t = &this->timer [i];
Timer_run( t, time );
result = t->counter;
t->counter = 0;
}
/* dsp */
else if ( addr == 0xF3 )
{
SPC_run_dsp( this, time );
result = DSP_read( &this->dsp, RAM [0xF2] & 0x7F );
}
}
return result;
}
void SPC_write( THIS, unsigned addr, int data, long const time )
{
/* first page is very common */
if ( addr < 0xF0 )
{
RAM [addr] = (uint8_t) data;
}
else switch ( addr )
{
/* RAM */
default:
if ( addr < ROM_ADDR )
{
RAM [addr] = (uint8_t) data;
}
else
{
this->extra_ram [addr - ROM_ADDR] = (uint8_t) data;
if ( !this->rom_enabled )
RAM [addr] = (uint8_t) data;
}
break;
/* DSP */
/*case 0xF2:*/ /* mapped to RAM */
case 0xF3: {
SPC_run_dsp( this, time );
int reg = RAM [0xF2];
if ( reg < REGISTER_COUNT ) {
DSP_write( &this->dsp, reg, data );
}
else {
/*dprintf( "DSP write to $%02X\n", (int) reg ); */
}
break;
}
case 0xF0: /* Test register */
/*dprintf( "Wrote $%02X to $F0\n", (int) data ); */
break;
/* Config */
case 0xF1:
{
int i;
/* timers */
for ( i = 0; i < TIMER_COUNT; i++ )
{
struct Timer * t = this->timer+i;
if ( !(data & (1 << i)) )
{
t->enabled = 0;
t->next_tick = TIMER_DISABLED_TIME;
}
else if ( !t->enabled )
{
/* just enabled */
t->enabled = 1;
t->counter = 0;
t->count = 0;
t->next_tick = time;
}
}
/* port clears */
if ( data & 0x10 )
{
RAM [0xF4] = 0;
RAM [0xF5] = 0;
}
if ( data & 0x20 )
{
RAM [0xF6] = 0;
RAM [0xF7] = 0;
}
SPC_enable_rom( this, (data & 0x80) != 0 );
break;
}
/* Ports */
case 0xF4:
case 0xF5:
case 0xF6:
case 0xF7:
/* to do: handle output ports */
break;
/* verified on SNES that these are read/write (RAM) */
/*case 0xF8: */
/*case 0xF9: */
/* Timers */
case 0xFA:
case 0xFB:
case 0xFC: {
int i = addr - 0xFA;
struct Timer* t = &this->timer [i];
if ( (t->period & 0xFF) != data )
{
Timer_run( t, time );
this->timer[i].period = data ? data : 0x100;
}
break;
}
/* Counters (cleared on write) */
case 0xFD:
case 0xFE:
case 0xFF:
/*dprintf( "Wrote to counter $%02X\n", (int) addr ); */
this->timer [addr - 0xFD].counter = 0;
break;
}
}
/**************** Sample generation ****************/
int SPC_play( THIS, long count, int32_t* out )
{
int i;
assert( count % 2 == 0 ); /* output is always in pairs of samples */
long start_time = -(count >> 1) * CLOCKS_PER_SAMPLE - EXTRA_CLOCKS;
/* DSP output is made on-the-fly when DSP registers are read or written */
this->sample_buf = out;
this->next_dsp = start_time + CLOCKS_PER_SAMPLE;
/* Localize timer next_tick times and run them to the present to prevent
a running but ignored timer's next_tick from getting too far behind
and overflowing. */
for ( i = 0; i < TIMER_COUNT; i++ )
{
struct Timer* t = &this->timer [i];
if ( t->enabled )
{
t->next_tick += start_time + EXTRA_CLOCKS;
Timer_run( t, start_time );
}
}
/* Run from start_time to 0, pre-advancing by extra cycles from last run */
this->extra_cycles = CPU_run( this, start_time + this->extra_cycles ) +
EXTRA_CLOCKS;
if ( this->extra_cycles < 0 )
{
/*dprintf( "Unhandled instruction $%02X, pc = $%04X\n",
(int) CPU_read( r.pc ), (unsigned) r.pc ); */
return -1;
}
/* Catch DSP up to present */
#if 0
ENTER_TIMER(cpu);
#endif
SPC_run_dsp( this, -EXTRA_CLOCKS );
#if 0
EXIT_TIMER(cpu);
#endif
assert( this->next_dsp == CLOCKS_PER_SAMPLE - EXTRA_CLOCKS );
assert( this->sample_buf - out == count );
return 0;
}

64
apps/codecs/spc/spc_profiler.c Normal file
View File

@ -0,0 +1,64 @@
/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id$
*
* Copyright (C) 2006-2007 Adam Gashlin (hcs)
*
* All files in this archive are subject to the GNU General Public License.
* See the file COPYING in the source tree root for full license agreement.
*
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
* KIND, either express or implied.
*
****************************************************************************/
/* lovingly ripped off from Game_Music_Emu 0.5.2. http://www.slack.net/~ant/ */
/* DSP Based on Brad Martin's OpenSPC DSP emulator */
/* tag reading from sexyspc by John Brawn (John_Brawn@yahoo.com) and others */
#if defined(SPC_PROFILE) && defined(USEC_TIMER)
#include "codec.h"
#include "spc_codec.h"
#define SPC_DEFINE_PROFILER_TIMERS
#include "spc_profiler.h"
void reset_profile_timers(void)
{
RESET_TIMER(total);
RESET_TIMER(render);
#if 0
RESET_TIMER(cpu);
RESET_TIMER(dsp);
RESET_TIMER(dsp_pregen);
RESET_TIMER(dsp_gen);
RESET_TIMER(dsp_mix);
#endif
}
void print_timers(char * path)
{
int logfd = ci->open("/spclog.txt",O_WRONLY|O_CREAT|O_APPEND);
ci->fdprintf(logfd,"%s:\t",path);
ci->fdprintf(logfd,"%10ld total\t",READ_TIMER(total));
PRINT_TIMER_PCT(render,total,"render");
#if 0
PRINT_TIMER_PCT(cpu,total,"CPU");
PRINT_TIMER_PCT(dsp,total,"DSP");
ci->fdprintf(logfd,"(");
PRINT_TIMER_PCT(dsp_pregen,dsp,"pregen");
PRINT_TIMER_PCT(dsp_gen,dsp,"gen");
PRINT_TIMER_PCT(dsp_mix,dsp,"mix");
#endif
ci->fdprintf(logfd,"\n");
ci->close(logfd);
logfd=-1;
}
#endif /* #if defined(SPC_PROFILE) && defined(USEC_TIMER) */

47
apps/codecs/spc/spc_profiler.h
View File

@ -5,6 +5,7 @@
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id$
*
* Copyright (C) 2006-2007 Adam Gashlin (hcs)
*
@ -17,11 +18,19 @@
****************************************************************************/
/* a fun simple elapsed time profiler */
#ifndef _SPC_PROFILER_H_
#define _SPC_PROFILER_H_
#if defined(SPC_PROFILE) && defined(USEC_TIMER)
#define CREATE_TIMER(name) static uint32_t spc_timer_##name##_start,\
#ifdef SPC_DEFINE_PROFILER_TIMERS
#define CREATE_TIMER(name) uint32_t spc_timer_##name##_start,\
spc_timer_##name##_total
#else
#define CREATE_TIMER(name) extern uint32_t spc_timer_##name##_start,\
spc_timer_##name##_total
#endif
#define ENTER_TIMER(name) spc_timer_##name##_start=USEC_TIMER
#define EXIT_TIMER(name) spc_timer_##name##_total+=\
(USEC_TIMER-spc_timer_##name##_start)
@ -43,38 +52,8 @@ CREATE_TIMER(dsp_gen);
CREATE_TIMER(dsp_mix);
#endif
static void reset_profile_timers(void) {
RESET_TIMER(total);
RESET_TIMER(render);
#if 0
RESET_TIMER(cpu);
RESET_TIMER(dsp);
RESET_TIMER(dsp_pregen);
RESET_TIMER(dsp_gen);
RESET_TIMER(dsp_mix);
#endif
}
static int logfd=-1;
static void print_timers(char * path) {
logfd = ci->open("/spclog.txt",O_WRONLY|O_CREAT|O_APPEND);
ci->fdprintf(logfd,"%s:\t",path);
ci->fdprintf(logfd,"%10ld total\t",READ_TIMER(total));
PRINT_TIMER_PCT(render,total,"render");
#if 0
PRINT_TIMER_PCT(cpu,total,"CPU");
PRINT_TIMER_PCT(dsp,total,"DSP");
ci->fdprintf(logfd,"(");
PRINT_TIMER_PCT(dsp_pregen,dsp,"pregen");
PRINT_TIMER_PCT(dsp_gen,dsp,"gen");
PRINT_TIMER_PCT(dsp_mix,dsp,"mix");
#endif
ci->fdprintf(logfd,"\n");
ci->close(logfd);
logfd=-1;
}
void reset_profile_timers(void);
void print_timers(char * path);
#else
@ -87,3 +66,5 @@ static void print_timers(char * path) {
#define reset_profile_timers()
#endif
#endif /* _SPC_PROFILER_H_ */